Refuge Area
A refuge area is the protected space a high-rise building must provide at code-defined height intervals, sized from floor area and occupant load, where occupants can wait safely for rescue during a fire.
Why it matters on an MEPF project
Evacuating a tall building fully during a fire is often slower than fire growth; the code's answer is staged safety — refuge areas at prescribed vertical intervals where people can hold in protected conditions. NBC 2016 Part 4 sets when refuge is required (by building height), how much area, and the access/ventilation rules that make it genuinely usable.
Refuge areas die by encroachment: they get grilled in, stored in, rented out, or converted — and every one of those is a finding at renewal inspection and a criminal exposure after an incident. The area must stay accessible from the staircase, open/ventilated as designed, and signposted.
How it's specified in practice
| Parameter | Typical / working position | Governing reference |
|---|---|---|
| When required | High-rise thresholds per code (height-based) | NBC 2016 Part 4 |
| Vertical interval | At prescribed height bands up the building | NBC 2016 Part 4 |
| Sizing basis | From floor plate and occupant load | NBC 2016 Part 4 |
| Condition | Accessible from exit stair, ventilated, never enclosed or repurposed | NBC 2016 Part 4 |
Common mistakes
- Counting refuge area toward saleable/leasable space and enclosing it later.
- Grilling refuge terraces shut "for security", making them unreachable.
- No signage — occupants cannot use what they cannot find.
- Storing housekeeping material there because it is "unused space".
Related on this site
Frequently asked
Can a refuge area double as a service balcony?
No. Its protected, accessible, unobstructed condition is the requirement — anything that compromises access or capacity is an encroachment the inspection will flag and an incident inquiry will prosecute.
How much refuge area does my building need?
It is computed from your floor plate and occupant load at the intervals NBC 2016 Part 4 prescribes for your height class. Our refuge-area calculator gives the working; the approved fire drawings give the binding number.
Standards referenced: NBC 2016 Part 4